/* 基础样式 */
:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --accent-color: #ffe66d;
    --text-color: #2d334a;
    --background-color: #f7f9fc;
    --page-background: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--page-background);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px var(--shadow-color);
    overflow: hidden;
}

/* 标题和控制区 */
header {
    background: linear-gradient(135deg, var(--primary-color), #ff9a8b);
    color: white;
    padding: 20px;
    text-align: center;
}

h1 {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 2.5rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 10px;
}

button {
    border: none;
    border-radius: 50px;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Noto Sans SC', sans-serif;
}

.nav-btn {
    background-color: white;
    color: var(--primary-color);
}

.nav-btn:hover:not([disabled]) {
    background-color: #f0f0f0;
    transform: scale(1.05);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.audio-btn {
    background-color: var(--accent-color);
    color: var(--text-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.audio-btn:hover {
    background-color: #ffd83d;
    transform: scale(1.1);
}

.toggle-btn {
    background-color: var(--secondary-color);
    color: white;
}

.toggle-btn:hover {
    background-color: #3dbeb6;
}

.toggle-btn.active {
    background-color: #ff9a8b;
}

/* 故事内容 */
main {
    padding: 20px;
    min-height: 600px;
}

.page {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.illustration-container {
    text-align: center;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 8px var(--shadow-color);
}

.illustration {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius);
}

.story-text {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 5px var(--shadow-color);
}

h2 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.8rem;
    font-family: 'Ma Shan Zheng', cursive;
}

p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

/* 页脚 */
footer {
    background-color: #f0f0f0;
    padding: 15px;
    text-align: center;
    font-size: 0.9rem;
    color: #666;
}

.page-indicator {
    margin-top: 5px;
    font-weight: bold;
}

/* 播放控制图标 */
.play-icon, .pause-icon {
    font-size: 1.2rem;
}

.hidden {
    display: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .controls {
        flex-wrap: wrap;
    }
    
    button {
        font-size: 0.9rem;
        padding: 8px 16px;
    }
    
    .story-text {
        padding: 15px;
    }
    
    p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .controls {
        gap: 8px;
    }
    
    button {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    .audio-btn {
        width: 40px;
        height: 40px;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    p {
        font-size: 0.95rem;
    }
}

/* 打印样式 */
@media print {
    body {
        background-color: white;
        padding: 0;
    }
    
    .container {
        box-shadow: none;
        max-width: 100%;
    }
    
    .controls, .audio-btn, footer {
        display: none;
    }
    
    .page {
        display: block;
        page-break-after: always;
        margin-bottom: 30px;
    }
    
    .illustration {
        max-height: 300px;
        object-fit: contain;
    }
}

/* 动画效果 */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
    40% {transform: translateY(-20px);}
    60% {transform: translateY(-10px);}
}

.audio-btn.playing {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 230, 109, 0.7);
    }
    
    70% {
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(255, 230, 109, 0);
    }
    
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 230, 109, 0);
    }
}